______ keyword is used to find the number of values in a column.





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  1. Which one is correct statement?Logical data independence provides following without changing application…
  2. The full form of GUI is _________
  3. In an E-R, Y is the dominant entity and X is a subordinate entity. Then which of the following is incorrect…
  4. The normalization was first proposed by .
  5. Data independence means
  6. _____ First proposed the process of normalization.
  7. The collection of information stored in a database at a particular moment is called as ......
  8. The ______ key of a relation is the attribute (column) or collection of attributes, which uniquely identify…
  9. For using a specific database …………… command is used.
  10. Relational Algebra is
  11. _____clause is an additional filter that is applied to the result.
  12. The default level of consistency in SQL is
  13. Drop Table cannot be used to drop a table referenced by a ______ constraint.
  14. The language that requires a user to specify the data to be retrieved without specifying exactly how…
  15. Which of the following is true for network structure?
  16. When an E-R diagram is mapped to tables, the representation is redundant for
  17. Which of the following is not a property of transactions?
  18. In a relational schema, each tuple is divided into fields called
  19. Dependency preservation is not guaranteed in
  20. The ____ operator joins two or more conditions and displays rows only if that rows data satisfies all…
  21. For correct behaviour during recovery, undo and redo operation must be
  22. The fact that information in the data warehouse changes far less often and may be regarded as non-real-time…
  23. The normal form that is not necessarily dependency preserving is
  24. Which one is true statement :
  25. The _____ category includes storage media that can be operated on directly by the computers central…
  26. Processed data is called _____
  27. Relationships among relationships can be represented in an-E-R model using
  28. ______is a special type of integrity constraint that relates two relations & maintains consistency across…
  29. Which of the following concurrency control schemes is not based on the serializability property?
  30. ______ keyword is used to find the number of values in a column.